</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

ER70KS Flux-Cored Arc Welding Wire from China

ER70KS is a seamless copper-coated flux-cored wire made from mild steel, designed for high-strength electric arc welding in structural fabrication. Classified under HTS 8311.20.00.00 due to its base metal core filled with flux for arc stability and slag formation during welding.

Duty Rate — China → United States

37.5%

Rate breakdown

9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China

Import Tips

Include AWS A5.20 certification to confirm flux-cored status and avoid reclassification

Ensure spools are labeled with wire diameter (e.g

0.035") and position (all-position) for accurate reporting

Test for copper coating integrity, as excessive coating may trigger scrutiny under coating headings